Metal closure



-Jan.5,1937. J. J. NOLL H AL I 2,066,481

METAL CLOSURE Original Filed Dec'. 22, 1934 Patented Jan. 5, 1937 UNITEDSTATES PATENT OFFICE W. Va., assignors to Hazel-Atlas Glass Company,Wheeling, W. Va., a corporation of West Virginia Original applicationDecember 22, 1934, Serial No.

758,837. Divided and this application April 20, 1936, Serial No. 75,445

4 Claims.

This application is a division of our application Serial Number 758,837,filed December 22, 1934.

The invention relates to metal closures for glass or other containers.

5 The closure may be of the continuous thread type or the lug type, andits top is provided with two upwardly extending members between which animplement may be inserted to aid in unscrewing the cap. It is not new toprovide a closure with upwardly extending members for that purpose. Butheretofore either no means was provided for preventing the implementfrom slipping out of place, or such means consisted of overhangingportions formed on the upwardly extending members. One of the objects ofthe present invention istoprovide a closure of such ,construction thatthe implement will not slip out of place, and which avoids the necessityof forming, in the manufacture of the closure, the abovementionedoverhanging portions.

Another object of the invention is to provide a closure of suchconstruction that in removing the closure from the receptacle theimplement itself will form nicks or dents in the upwardly ex- 5 tendingmembers, thereby preventing the implement from accidentally slipping outof place.

Various other objects and advantages of the invention will be apparentto those skilled in the art, from the following detailed description,when taken in connection with the accompanying drawing, in which,

The figure is a perspective view of the closure. The cap shown comprisesa top I provided with the usual bead 2, and a skirt having a knurledportion 3, a threaded portion 4, and terminating in a Wire edge 5. Theinvention is not limited to the specific type of screw cap illustrated,but contemplates any type of screw cap, or lug cap, or other types ofcaps which are moved to sealing position by rotation.

The top of the cap is provided with two knobs G which are preferablysubstantially circular in cross-section, and which have substantiallyvertical walls I.

The purpose of the knobs 6 is, of course, to facilitate removal of thecap from its container. It will be noted that while the cylindricalknobs are of a. fairly large diameter, to give sufficient strength, yetthey are also widely spaced, so 50 that any desired implement, such as aletter opener, case knife, kitchen knife, etc., can be inserted betweenthem, and a very good leverage will be obtained for unscrewing orturning the closure, for removal.

As mentioned above 55 the upstanding walls I of the knobs 6 aresubstantially vertical, and thus the actual shape of the knobs is notsuch as to prevent the opening implement from accidentally slipping outof place. In other words, the knobs are not provided with anyoverhanging portions for preventing actual displacement of the openingimplement. But as will now be pointed out the closure of the presentinvention does prevent the opening implement from accidentally slippingout of place, and it accomplishes this without the overhang, therebysimplifying the manufacture and lessening the cost.

It will be noted that the knobs 6 are circular in cross-section, andhence when the opening implement is inserted between the knobs it comesinto contact with only a small area of the knobs; and. these knobs areof sufficiently thin metal that the pressure of the opening implement,in contact with only a small area of the thin metal, forms a dent ornick in the knobs, thereby preventing accidental displacement of theimplement. In other words, the implement itself forms the means fordisplacement. And, of course, the greater the pressure required inturning off the cap, formed in the walls 6 of the knobs. While thecylindrical knobs are much preferred for giving the reduced area ofcontact with the implement yet other shapes, such for example astriangular shaped knobs or oval shaped knobs could be so positioned asto present only small areas to the opening implement, which small areain combination with this thin metal, permits the opening implement toform its own means for preventing accidental displacement.

From the foregoing description it will be apparent that we have deviseda cap which can be easily and inexpensively manufactured, as nooverhanging portions are required, and that we have provided a structurein which knobs are of such thin metal and of such shape that only smallareas of the knob come into contact with the opening implement, wherebythe implement forms its own anti-displacement means by pressing dents ornicks in the walls of the knob, and that the greater the pressurerequired to turn the cap the greater the opening implement will dig intothe knobs.

Having fully described the invention what we claim is:

1. A metal closure including a top and a depending skirt, meansassociated with the skirt for locking the closure on a container byrotation, two widely spaced knobs projecting upwardly from said top,said knobs being so shaped the greater will be the dents as to presentsmall areas to an opening implement inserted between them, and the metalforming the walls of said knobs being of such thinness that the openingimplement under pressure will form anti-displacement means in the smallareas presented.

2. A metal closure including a top and a threaded depending skirt, twowidely spaced knobs projecting upwardly from said top, said knobs beingso shaped as to present small areas to an opening implement insertedbetween them, and the metal forming the walls of said knobs being ofsuch thinness that the opening implement under pressure will formanti-displacement means in the small areas presented.

3. A metal closure including a top and a depending skirt, meansassociated with the skirt for locking the closure on a container byrotation, two widely spaced circular knobs projecting upwardly from saidtop, and the metal forming the walls of the circular knobs being of suchthinness that an opening implement under pres sure will form implementretaining dents in the small areas of the circular knobs presented tothe implement.

4. A metal closure including a top and a depending skirt, meansassociated with the skirt for locking the closure on a container byrotation, two spaced circular knobs projecting upwardly from said top,the walls of said knobs being substantially vertical, and the metalforming the walls of the circular knobs being of such thinness that anopening implement under pressure will form implement retaining dents inthe small areas of the circular vertical walls presented to theimplement.

JOHN J. NOLL. JOHN J. WILLIAMS.

